The stamps can be used for approaching school graduation ceremonies either when sending letters of invitation or as a special memory of the day. A new feature is that the stamps are not marked with a specific monetary value but rather with a category of use so they can flexibly be used for postage without additional payment even if postal tariffs change. Your Own School Graduation Stamp IV – Hot air balloon: The sheet with twenty different stamp designs is a composition refer-ring to school graduation and finding one’s way in the years after leaving school. Each of the twenty different stamps also works as an individual design, focusing on a particular element related to the topic such as a gown, book or diploma.